Man, 30, Dies after being struck by a crane

A worker has died after he was struck in the head by a crane at a steel distribution facility in Sydney's south-west.

WorkCover NSW has launched an investigation into a 30-year-old's death at Southern Steel Supplies in Milperra early on Monday morning.

Paramedics were called to the facility on Horsley Road at 6.30am after reports that a man had been critically injured when he was struck by a large magnet that was attached to a crane.

Colleagues of the man, who was bleeding heavily, performed CPR until emergency services arrived.

The man was taken to Liverpool Hospital, but died a short time later.

A WorkCover NSW spokesperson said inspectors were at the facility and had launched an investigation.

"Initial enquiries indicate the 30-year-old male worker sustained critical head injuries when he was struck by a crane magnet device. The worker later passed away from his injuries," the spokesperson said.

Police have been contacted for comment.